Pulse Sensor is used for communication between man and machine, giving a robot the ability to react to the pulse rate of the human mentor. The sensor consists of an ordinary LDR (with a resistance when illuminated of 300 ? and a dark resistance of around 10 M?) and a bright LED. The pulse sensor unit is detachable from a receptacle on the watch face and mountable into a receptacle at a first end of a remote pulse sensing cable.

Pulse transformers are separated into two transformer types such as power and signal. The typical pulse transformer operates in a unipolar mode. The magnetic flux in a typical AC transformer core alternates between positive and negative values. The magnetic flux in the typical pulse transformer does not. Pulse transformers usually operate at high frequency necessitating use of low loss cores. Pulse transformer designs vary widely in terms of power rating, inductance, voltage level, operating frequency, size, impedance, bandwidth, and packaging & winding capacitance.

Pulse/Function generators can either be internal circuits or pieces of electronic test equipments used to generate pulses. It usually allows control of the pulse repetition rate (frequency), pulse width, and the high- and low-voltage levels of the pulses. It may uses digital techniques, analog techniques, or a combination of both techniques to form the output pulses. For example, the pulse repetition rate and duration may be digitally controlled but the pulse amplitude and rise and fall times may be determined by analog circuitry in the output stage of the pulse generator. With correct adjustment, pulse generators can also produce a 50% duty cycle square wave.